Headquarters and Headquarters Battery, 30th Air Defense Artillery Brigade hosted an Extreme All-Terrain Run July 11, 2015, at 8 a.m. at Lake Elmer Thomas Recreation Area on Fort Sill, Okla. The 4.5-mile course pushed dozens of runners to their limits...

Headquarters and Headquarters Battery, 30th Air Defense Artillery Brigade hosted an Extreme All-Terrain Run July 11, 2015, at 8 a.m. at Lake Elmer Thomas Recreation Area on Fort Sill, Okla. The 4.5-mile course pushed dozens of runners to their limits...

Headquarters and Headquarters Battery, 30th Air Defense Artillery Brigade hosted an Extreme All-Terrain Run July 11, 2015, at 8 a.m. at Lake Elmer Thomas Recreation Area on Fort Sill, Okla. The 4.5-mile course pushed dozens of runners to their limits...